Why Do We Age? Biological Theories of Aging Learning Objectives  How do rate-of-living theories explain aging?  What are the major hypotheses in cellular theories of aging?  How do programmed cell death theories propose that we age?  How do the basic developmental forces interact in biological and physiological aging? 2 of 40

Why Do We Age? Theories Implications of the Developmental Forces  The biological, psychological, sociocultural, and lifecycle forces  Unified theory not yet developed  Three general approaches to slowing or reversing the aging process: 1. Delay the chronic illnesses of old age 2. Slow the fundamental processes of aging to increase life span 3. Arrest or reverse aging by removing the damage caused by the metabolic process 6 of 40

Appearance and Mobility Learning Objectives  How do our skin, hair, and voices change with age?  What happens to our body build with age?  What age-related changes occur in our ability to move around? 7 of 40

This preview
has intentionally blurred sections.
Sign up to view the full version.